Protective check-writing attachment fob



J. W. PADDOCK.

PROTECTIVE CHECK wRmNC AHACHMENT FOR TYPEWRITERS.

APPLICATION FILED JAN.1I. 1919.

Patented Mar. 2, 19202y WITNESSES ATTO R N EY JOSEPH WILLIAM PADDOCK, OF PANA, ILLINOIS.

PROTECTIVE CHECKWRITING ATTACHMENT FOR TYPEWRITERS.

Specification of Letters Patent.

Patented Mar. 2, 1920.

Application led January 11. 1919. Serial No. 270.6767. a

To all whom t may concern:

Be it known that I, JOSEPH W. PADDOCK, a. citizen of the United States, residing at Pana, in the county of Christian and State of Illinois, have invented new and useful Protective Check-Writing Attachments for Typewriters, of which the following is a specification.

This invention has reference to protective check writing attachments for typewriters, and its object is to provide means attachable to an ordinary typewriter for movement into and out of operative position, whereby the entire written portion of the check, 0r so much thereof as may be desired, is protected from alteration by the act of filling in the check.

One form of protecting the check against raising or other changes, is to indent or abrade the written surface so as to disturb or modify the fibers of the paper' and thereby prevent changing the surface thus protected, for any changes become at once apparent.

The invention contemplates the use of a bar or platen overriding the usual roller platen, the overriding or bar platen being of a character to cause abrasion or other disturbance of the paper surface by the blows imparted thereto by the type of the typewriter, suitable inking means being associated with the eXtra platen. Such eXtra platen may be a narrow affair and have a surface of file-like or other appropriate character, and provision is made for the employment of a ribbon which may be forced by the type of the typewriter against the paper, whereby the inking of the paper in conformity with the type and the abrasion or disturbance of the fibers of the paper are simultaneous.

The invention will be best understood from a consideration of the following detailed description taken in connection with the accompanying drawing forming part of this specification, with the understandinv. however, that the invention is not confined to any strict conformity with the showing of the drawing, but may be changed and modified so long as such changes and modifications mark no material departure from the salient features of the invention as eX- pressed in the appended claims.

In the drawing Y Figure 1 is an elevation, with some parts broken away, of a typewriter roller or platen and Some associated parts, with the invention applied and in position for writing, the inactive position of the invention being shown in dotted lines.

Fig. 2 is a plan View of one end of the structure shown in Fig. 1.

Fig. 3 is a section on the line 3-3 of Fig. 1 with the ordinary typewriter roller por platen shown in dotted lines and distant parts being omitted.

Referring to thedrawing, there is shown a typewriter roller or cylinder platen 1 which may be considered as of ordinary construction and therefore requiring no specific description. The roller is provided with a shaft or arbor 2 journaled in upright portions 3 of the main frame of the machine, all these parts being of the ordinary construction and the showing may be taken as indicative of any one of numerous forms of typewriters, it being understood that the invention is applicable to .various forms of typewriters with only such changes as slightly `different shapes of the typewriter construction may demand. The particular roller platen 1 shown in the drawing is provided at the ends with hubs 4.

Freely carried by the hubs 4: are arms 5, 6 respectively, at opposite ends of the roller platen 1, and these arms are of practically the same construction and are joined by a strip or bar 7 having an outer surface 8 of a `nature to disturb or abrade the fibers of paper forcibly pressed against it. The surface 8 may be roughened like a file 0r may be of other abrasive nature, like sandpaper or the surface may be of any nature which will disturb 0r indent the fibers of the paper in order that typewriter imprints made on the paper may be proof against erasure or change because of such disturbance or abrasion of the fibers. At the same time the disturbance of paper where imprinted is not suflicientto unduly weaken the paper or cause smearng or running of the ink, for the inking and the disturbance of the surface of the paper is caused by the blowsof the type upon the paper afrainst an irregular lsurface of a nature marring such surface to a slight extent but sutiicient for the purposes of the invention. The end of the bar 7 where joining the arms 5 and 6 is shouldered to form pockets 9 immediately adjacent to the arms and 6, each pocket being of a size to receive a corresponding end ot an inking' strip or ril bon 1() held in the respective pockets by clips 11 individual to the pokets. The clips 11 may be made of spring metal so as to be easily inserted into or removed from the pockets and at the same time securely hold the ends of' the ribbon 10 in place, leaving the portion of the ribbon between the ends at a sutlicient distance from the roughene`d face 8 of the bar 7 to permit the insertion between the ribbon and the bar olf the piece of paper upon which the imprints are to be produced. The piece of paper for which the particular invention is designed, is to be `considered as a check, and such check is indicated at 12 in Fig. 3. It will be understood, however, that the paper 12 may represent any piece of paper upon which protective writing is to be produced.

In the drawing, the arm 5 is shown provided with an extension 13 at its outer end constituting a ngerhold or manipulating piece. Ot' course such ingerhold may be provided on each arm 5 and 6, or but one arm may have such finger-piece In order that the attachment may be readily applied to or removed from the typewriter, ,a hinged yoke 1li is provided on each arm 5 and 6, and this yoke terminates in a clip 15 arranged to trictionally engage the respective arm 5 or 6 with the yoke 11iembracing the respective hub 4. The yoke also serves aS a pivotal connection pern'iitting the arms 5 `and 6 to move about the hub from an approximately horizontal position in the case of a visible typewriting machine, to a position tipped somewhat backwardly and out of the way, whereby the bar 7 may be moved orbitally about the longitudinal axis of the roller platen 1. In order to hold the abrading bar 7 in either the active or the inactive position, there is provided a yieldable strip 16 of sutlicient length, with the ends thereof in the path ot' the manipulating fingenpiece 13. The strip 16 carries a clip 17 oi elastic nature for application to one end of the frame 3, thus holding' the strip 16 in place. At cach end the strip 16 has a socket or perforation 18, and the finger-piece or extension 13 is provided with a pin or projection 19 capable of snapping into either one of the sockets 18 to hold the arm and bar 7 in either the active or the inactive position as desired. Thus the strip 16 constitutes a stop for the bar.

It is customary in protecting checks to limit the protection to those portions of the check designating; amounts, although the check may be further protected by extending the protection to names as well as amounts. If the protection is to be applied only to the amounts then other parts of the check may be written in on the typewriter, or by hand. as desired, and in either instance the wending atfehmest .is new@ est ef,

the way, which movement is upward and backward in the particular arrangement shown in the drawing. F or writing in the parts to be protected against raising or other changing, the abrading bar 7 is lowered into the path o'l the type, one of such type being indicated in the raised position at 20 in Fig. 1. If the ribbon 10, which may be provided with inde-lible ink, is utilized, the usual ribbon oi the typewriter is temporarily moved out ot' the way. The check 12 or other paper to be protected is inserted between the bar 7 and the ribbon 10, and the writing of the amounts, or whatever other writing iS t0 be perform-ed, proceeds in the usual way, with the result that the imprints are made u on the paper by the impact oi' the type agamst the ribbon 10, making the imprints upQll .the paper the same as though the ordinary typewriter ribbon was in place. There is this difference, however, that instead of the blows being received through the paper upon the roller platen 1, they are received upon the roughened surface 8 of the bar 7, v,which latter may be in sufficiently close relation to the roller platen 1 to be lirmly backed up thereby, thus causing the imprints to be sharply and distinctly made. The surface of the paper, where the imprints occur, ribbed or otherwise disturbed due to the roughened surface against which the type torce the paper where striking the latter. The result is that the paper where imprinted is roughened to a sufficient extent to prevent the success of any attempt at change.

The attachment simplies the operation of protecting the check or other paper against change and is always present upon the niachine for immediate use or movement out of the way. The protection may be limited or may be extended to all those parts of the check or other Apaper which are usually llled in. especially those parts capable of being filled in on the typewriter.

It will be understood that the ribbon 10 may be next to the roughened bar and the paper passed over it thereby allowing the use of the regular ribbon of the typewriter whereby the letters are inked and impressed on both sides of the paper, or the ribbon 10 may be omitted and the regular ribbon only be used.

lhat is claimed is 1. A check protecting attachment for typewriters comprising a bar for interposition in the path ot the type, said bar being of a length greater than that of the roller platen of the typewriting machine and provided at the ends with arms for pivotal mounting on the axis of the roller platen, and means Vfor locking the bar in and out of active position, and said barvalso being provided with a paper-engaging lsurface of a roughened char.v aeter to disturb the fibers'ofr` the paper Where the letter is .Street ha tree 2. A check protecting attachment for typewriters, comprising a bar with a paper abrading surface for interposition in the path of the type of the typewriting machine in juxtaposition to but spaced from the platen and extending throughout the length of travel of the platen, said bar being mounted on the axis of the platen for orbital movement about said axis into and out of its typeengaglng position. f

3. A check protecting attachment for typewriters, comprising means having a surface of a character to disturb the fibers of a sheet of paper pressed thereagainst, and supporting means for the first-named means provided with devices for pivotally attaching it to the axis of a typewriter roller platen with the surface of the first-named means in the path of the operated type, said attachment also including inking means in operative relation to the first-named means.

4. A check protecting attachment for typewriters, comprising an elongated bar with terminal arms having means for mounting the bar orbitally with relation to the axis of the roller platen, said bar having a paper-engaging surface of a character to disturb the fibers of the paper, and means for securing inking means to the bar to be located on the face of the paper passing over the bar remote from said bar.

5. A check protecting attachment for typewriters, comprising an elongated bar for location along and closely adjacent to the surface of the typewriter roller plate-n, said bar having supporting arms at the ends with means for connecting the arms to the axial portions of the roller platen, and a holding bar with means for attaching it to the frame of the typewriting machine, said holding means and the arm portion of the bar having coacting means for holding the bar in either the active or the inactive position.

6. A check protecting attachment for typewriters, comprising an elongated bar for location along and closely adjacent to the surface of the typewriter roller platen, said bar having supporting arms at the ends with means for connecting the arms to the axial portions of the roller platen, and a stop with means for attaching it to the frame of the typewriting machine, said stop and the arm portion of the bar having coacting means Jfor holding the bar in either the act-ive or the in active position, and said bar where attached to the arms having shouldered portions constituting sockets. and clips adapted to the sockets for holding the ends of an inking band or ribbon therein.

7. A check protecting attachment Jfor typewriters, comprising a bar with a roughened paper engaging surface and mounted on the ends of the roller platen of the typewriter for 'orbital movement with respect to the axis of said roller platen, and an inking ribbon connected at the ends to and carried by said bar for participation inthe orbital movement of the bar. f

8. A check protecting attaclnnent for typewriters, comprising a. bar with a roughened paper engaging surface and mounted on the ends of the roller platen of the typewriter for orbital movement with respect to the axis of said roller platen, and an inking ribbon connected at the ends to and carried by said bar for `participation in the orbital mov ment of the bar, said connections comprising means for attaching the ribbon to and releasing it from the bar at will.

9. A check protecting attachment for typewriters, comprising an elongated bar with a roughened paper-engaging face and having terminal arms pivotally mounted on the axis of the typewriter roller platen, coaoting locking means on the bar and a fixed portion of the typewriter for locking the bar in either the active or the inactive position, and a manipulating means on the bar for moving the latter from one position to the other.

l0. A check protecting attachment for typewriters, comprising an elongated bar with a roughened paper-engaging face, means for pivotally supporting the bar on the axial portion of the typewriter roller platen for orbital movement of the bar with relation to said axis, and coacting means on the pivotal supporting means for the bar and on a fixed portion of the frame of the typewriter ior holding the bar in either the active or inactive position.

l1. A check protecting attachment for typewriters, comprising an elongated bar with a roughened paper-engaging face, means for pivotally supporting the bar on the axial portion of the typewriter roller platen for orbital movement of the bar With relation to said axis, and coacting means on the pivotal supporting means for the bar and on a fixed portion of the frame of the typewriter for holding the bar in either the active or inactive position, the holding means on the fixed portion of the typewriter compri."- ing a yieldable strip and a clip of elastic nature for engaging the fixed part of the typewriter with the strip in the path of the holding means on the bar.

12. A check protecting attachment for typewriters, comprising an elongated bar w-ith a roughened paper-engaging surface, arms at the end of the bar with hinged members for engaging the axial portion yof the typewriter roller platen to hold the arms thereto, manipulating means connected to the 'bar for moving the bar orbit-ally with relation to the typewriter roller platen into and out of the path of the type, and coacting holding means for the bar connected to the bar and on a fixed portion of the typewriter, including an elastic strip and a clip, whereby the :bar and the holding means may be at taehed ato or removed from the `typewriter at Will and Without thendo tools.

13. A cheek protecting inttahment for typewriters, comprising wn elongated Ybzu with a, roughened paper-engaging .surface und pivotally mounted supporting `anms at the ends of ythe bar for vattachment to the axial .portion of the `typewriter `roller platen, whereby the bar may be moved into and ont of active .position With relation to the type,

`the 'bar Where fast to the arms being shouldered to form pockets, and elastic clips attached to the pockets Afor `holding the endszof un nking ribbon extended over `the .roughened face ofthe bar.

In testimony, that I `claim the foregoing as my own, I have hereto affixed my signature.

JOSEPH WILLIAM PADDOCK. 

